Tampon and method of making same

Abstract

The application discloses an easy-to-take-out sanitary tampon and a preparation method thereof. The preparation method of the sanitary tampon comprises the following steps: S1, mixing cotton fibers with modified fibers, then carding, laying the single-layer cotton fibers after carding, and then stacking the single-layer cotton fibers, and cutting after shaping to obtain a cotton fiber layer; S2, wrapping the cotton fiber layer with modified non-woven fabric, and obtaining a strip-shaped fiber layer after pressing, then fixing a cotton thread at the center of the strip-shaped fiber layer, and exposing the tail end of the cotton thread outside the strip-shaped fiber layer by 10-20 cm, to obtain a strip-shaped fiber layer with a cotton thread; S3, curling the strip-shaped fiber layer with the cotton thread to form an elongated cylindrical absorbent, and performing microwave heating treatment after pressing and shaping in a former, to obtain a tampon body of the sanitary tampon; and S4, loading the tampon body of the sanitary tampon into a catheter, to obtain the easy-to-take-out sanitary tampon. The surface of the sanitary tampon provided by the application becomes a hydrogel under the condition of moisture absorption, and can be easily taken out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sanitary products, in particular to an easy-to-remove sanitary tampon and a preparation method thereof. BACKGROUND

[0002] The origin of sanitary tampons can be traced back to the early 20th century, when the options for women's menstrual hygiene products were limited, and they often used cloth, cotton or other materials to cope with menstrual distress. In the early 1900s, as women's awareness awakened and concerns about health and hygiene grew, more modern menstrual products began to appear on the market. In 1919, American nurse Arthur H. McGowan invented the first sanitary tampon. This product used a long strip of cotton material that could be inserted through the vagina, providing women with better comfort and concealment.

[0003] The material of sanitary tampons is mainly cotton, synthetic fiber or a mixture of the two, with a diameter of 1 cm to 1.9 cm, and a cotton thread (pulling rope) attached to the tail end. The degree of curvature of the tip of the sanitary tampon varies among manufacturers, allowing users to choose according to their own usage habits. As a convenient and comfortable women's menstrual hygiene product, sanitary tampons have become an indispensable part of today's market after a century of development. Sanitary tampons not only improve the quality of life for women during their menstrual period, but also promote the improvement of public health awareness and social concern for women's health issues.

[0004] However, the existing sanitary tampon will swell when absorbing menstrual blood, tightly adhering to the vaginal wall, and will feel uncomfortable when removed, so how to prepare an easy-to-remove sanitary tampon is a problem that needs to be solved at present. SUMMARY

[0005] The main purpose of the present application is to provide an easy-to-remove sanitary tampon and a preparation method thereof, which aims to solve the problem that the existing sanitary tampon rubs against the vaginal wall when removed, making the user feel uncomfortable.

[0006] To achieve the above-mentioned purpose, the present application provides a preparation method of an easy-to-remove sanitary tampon, comprising the following steps:

[0007] S1, mixing cotton fibers with modified fibers, then carding, after carding, laying the single-layer cotton fibers, then stacking the single-layer cotton fibers, shaping and cutting to obtain a cotton fiber layer;

[0008] S2, wrapping the cotton fiber layer with modified non-woven fabric, pressing to obtain a strip-shaped fiber layer, then fixing the cotton thread at the center of the strip-shaped fiber layer, with the tail end of the cotton thread exposed 10-20 cm outside the strip-shaped fiber layer, to obtain a strip-shaped fiber layer with a cotton thread;

[0009] S3, curling the strip-shaped fiber layer with cotton threads to form a long strip cylindrical absorbent, and performing microwave heating treatment after compression molding in a former to obtain a tampon body of the sanitary tampon;

[0010] S4, loading the tampon body of the sanitary tampon into a catheter to obtain the sanitary tampon which is easy to take out.

[0011] Preferably, in step S1, the preparation method of the modified fiber comprises the following steps:

[0012] A sodium hydroxide solution is added to a beaker containing viscose fibers, heated, stirred, and allowed to stand for a period of time, then chloroacetic acid and isopropyl alcohol are added, heated and reacted to obtain a preliminary modified viscose fiber; then the preliminary modified viscose fiber is added to a silk fibroin solution, and N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl) carbonyl diimide are added, acetic acid is added to adjust the pH to 5-6, and the reaction is stirred, then washed with deionized water and dried to obtain the modified fiber.

[0013] Preferably, the mass fraction of the sodium hydroxide solution is 18-22%; the temperature of the heating is 40-50℃; the standing reaction time is 50-100min; the heating reaction temperature is 60-80℃; the mass ratio of chloroacetic acid to viscose fiber is (1-2):1; and the concentration of the silk fibroin solution is 10-20mg / mL.

[0014] Preferably, in step S2, the preparation method of the modified non-woven fabric comprises the following steps:

[0015] Chitosan is dissolved in an acetic acid solution, heated in a water bath, and fully stirred until completely dissolved to obtain a chitosan solution, then N,N'-methylene bisacrylamide is added, ultrasonically dispersed, then polyaspartic acid, ammonium persulfate and tetramethyl ethylenediamine are added, and the reaction is stirred to obtain a hydrogel, which is then immersed in a non-woven fabric and dried to obtain the modified non-woven fabric.

[0016] Preferably, the mass ratio of chitosan, polyaspartic acid and N,N'-methylene bisacrylamide is (10-30):(20-40):(1-2).

[0017] Preferably, the temperature of the water bath heating is 45-55℃.

[0018] Preferably, in step S1, the mass ratio of the cotton fibers to the modified fibers is (50-75):(20-40).

[0019] Preferably, in step S1, the cotton fiber layer has a grammage of 200-900g / m 2 .

[0020] Preferably, in step S4, the temperature of the microwave heating is 50-65℃, and the time of the microwave heating is 2-8s.

[0021] The application further provides the easy-to-take-out sanitary tampon prepared by the preparation method of the easy-to-take-out sanitary tampon.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] (1) The preparation method of the easy-to-take-out sanitary tampon provided by the application first modifies viscose fibers to enhance the moisture absorption of the viscose fibers, then performs blending, carding, stacking, and shaping and cutting on the viscose fibers and cotton fibers to obtain a cotton fiber layer, and then performs wrapping, pressing, fixing, and curling on the modified non-woven fabric to obtain the easy-to-take-out sanitary tampon; since the modified non-woven fabric forms a hydrogel film on the outer surface in a wet condition, the sanitary tampon is easy to take out after use.

[0024] (2) The preparation method of the easy-to-take-out sanitary tampon provided by the application first performs alkaline activation on viscose fibers, then performs carboxymethyl modification on the alkaline-activated viscose fibers by taking chloroacetic acid as a modifier, and then performs reaction on the carboxymethyl-modified viscose fibers and silk fibroin to graft the protein onto the viscose fibers; since the silk fibroin is a natural high-molecular protein and has better skin friendliness and moisture absorption, the sanitary tampon has better texture.

[0025] (3) The preparation method of the easy-to-take-out sanitary tampon provided by the application uses chitosan hydrogel cross-linked polyaspartic acid to modify the non-woven fabric, so that the modified non-woven fabric has sterilization and immunization activity, has strong water absorption, has good adhesion to the protein grafted on the viscose fibers, maintains the overall stability of the sanitary tampon, and becomes hydrogel in a wet condition, thereby greatly reducing the friction with the vaginal wall and being easy to take out. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0027] Figure 1 The flow chart of the preparation method of the easy-to-take-out sanitary tampon provided by the application.

[0028] The implementation, functional features and advantages of the application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. If the specific conditions are not indicated in the embodiments, the conventional conditions or the conditions suggested by the manufacturers are adopted. If the manufacturers of the reagents or instruments are not indicated, the conventional products that can be purchased in the market are adopted. In addition, the technical solutions in each embodiment can be combined with each other, but it should be considered that the combination of the technical solutions does not exist and is not within the protection scope of the present application when the combination of the technical solutions appears to be contradictory or unachievable on the premise that the combination of the technical solutions can be achieved by the ordinary skilled in the art. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0030] The technical solutions of the present application will be described in further detail below in combination with the specific embodiments and the drawings. It should be understood that the following embodiments are only used to explain the present application and do not limit the present application.

[0031] Embodiment 1

[0032] A preparation method of a sanitary tampon easy to take out, comprising the following steps:

[0033] (1) 60 g of cotton fibers are mixed with 30 g of modified fibers, and then carded. After the carding is completed, the single-layer cotton fibers are overlapped and shaped and cut to obtain a cotton fiber layer;

[0034] (2) The cotton fiber layer is wrapped with modified non-woven fabric, and a strip-shaped fiber layer is obtained after pressing. Then, a cotton thread is fixed at the center of the strip-shaped fiber layer, and the tail end of the cotton thread is exposed outside the strip-shaped fiber layer by 15 cm to obtain a strip-shaped fiber layer with a cotton thread;

[0035] (3) The strip-shaped fiber layer with the cotton thread is rolled into a long cylindrical absorbent, and after being pressed and formed in a former, the long cylindrical absorbent is subjected to microwave heating treatment at 60 ℃ for 5 s to obtain a tampon body of a sanitary tampon;

[0036] (4) The tampon body of the sanitary tampon is loaded into a catheter to obtain a sanitary tampon easy to take out;

[0037] The preparation method of the modified fibers comprises the following steps:

[0038] A beaker containing 30g viscose fiber is added with 10mL of 20% sodium hydroxide solution, heated to 45℃, stirred, and left to react for 75min, then 45g chloroacetic acid, isopropyl alcohol, heated to 70℃, and reacted to obtain the preliminary modified viscose fiber; then the preliminary modified viscose fiber is added to a 15mg / mL silk fibroin solution, and 3g N-hydroxysuccinimide and 2g 1-ethyl-3-(3-dimethylaminopropyl) carbonyldiimidazole are added, and acetic acid is added to adjust the pH to 5.5, and stirred to react, and after the reaction is completed, deionized water is washed, and dried to obtain the modified fiber;

[0039] The preparation method of the modified non-woven fabric comprises the following steps:

[0040] 2g chitosan is dissolved in a 10% acetic acid solution, heated to 50℃ in a water bath, and fully stirred until completely dissolved to obtain a chitosan solution, then 0.15g N, N'-methylene bisacrylamide is added, ultrasonically dispersed, then 3g polyaspartic acid, 0.1g ammonium persulfate and 0.08g tetramethyl ethylenediamine are added, and stirred to react to obtain a hydrogel, the hydrogel is immersed in non-woven fabric, and then dried to obtain the modified non-woven fabric.

[0041] Example 2

[0042] A method for preparing a sanitary tampon that is easy to remove, comprising the following steps:

[0043] (1) 50g cotton fiber is mixed with 20g modified fiber, then carded, and after carding, the single-layer cotton fiber is laid up, then the single-layer cotton fiber is stacked, shaped and cut to obtain a cotton fiber layer;

[0044] (2) The cotton fiber layer is wrapped with a modified non-woven fabric, and after pressing, a strip-shaped fiber layer is obtained, then a cotton thread is fixed at the center of the strip-shaped fiber layer, and the tail end of the cotton thread is exposed 10cm outside the strip-shaped fiber layer to obtain a strip-shaped fiber layer with a cotton thread;

[0045] (3) The strip-shaped fiber layer with a cotton thread is rolled into a long cylindrical absorbent, and after pressing in a former, it is subjected to microwave heating treatment at 50℃ for 2s to obtain a tampon body of a sanitary tampon;

[0046] (4) The tampon body of the sanitary tampon is loaded into a catheter to obtain a sanitary tampon that is easy to remove;

[0047] The preparation method of the modified fiber comprises the following steps:

[0048] A beaker containing 20 g of viscose fiber is added with 10 mL of 18% sodium hydroxide solution, heated to 40°C, stirred, and left to react for 50 min, then 20 g of chloroacetic acid, isopropyl alcohol, heated to 60°C, and reacted to obtain the preliminary modified viscose fiber; then the preliminary modified viscose fiber is added to a 10 mg / mL silk fibroin solution, and 3 g of N-hydroxysuccinimide and 2 g of 1-ethyl-3-(3-dimethylaminopropyl) carbonyldiimidazole are added, and acetic acid is added to adjust the pH to 5, and stirred to react, and after the reaction is completed, deionized water is washed, and dried to obtain the modified fiber;

[0049] The preparation method of the modified non-woven fabric comprises the following steps:

[0050] 1 g of chitosan is dissolved in a 10% acetic acid solution, heated to 45°C in a water bath, and fully stirred until completely dissolved to obtain a chitosan solution, then 0.1 g of N, N'-methylene bisacrylamide is added, ultrasonically dispersed, then 2 g of polyaspartic acid, 0.1 g of ammonium persulfate, and 0.08 g of tetramethyl ethylenediamine are added, and stirred to react to obtain a hydrogel, the hydrogel is immersed in a non-woven fabric, and then dried to obtain a modified non-woven fabric.

[0051] Example 3

[0052] A method for preparing a sanitary tampon that is easy to remove, comprising the following steps:

[0053] (1) 75 g of cotton fiber is mixed with 40 g of modified fiber, then carded, and after carding, the single-layer cotton fiber is stacked, and after stacking and shaping and cutting, a cotton fiber layer is obtained;

[0054] (2) The cotton fiber layer is wrapped with a modified non-woven fabric, and after pressing, a strip-shaped fiber layer is obtained, then a cotton thread is fixed at the center of the strip-shaped fiber layer, and the tail end of the cotton thread is exposed 20 cm outside the strip-shaped fiber layer to obtain a strip-shaped fiber layer with a cotton thread;

[0055] (3) The strip-shaped fiber layer with a cotton thread is rolled into a long cylindrical absorbent, and after pressing in a former, it is subjected to microwave heating treatment at 65°C for 8 s to obtain a tampon body of a sanitary tampon;

[0056] (4) The tampon body of the sanitary tampon is loaded into a catheter to obtain a sanitary tampon that is easy to remove;

[0057] The preparation method of the modified fiber comprises the following steps:

[0058] A beaker containing 30 g of viscose fiber is added with 10 mL of a 22% by mass sodium hydroxide solution, heated to 50°C, stirred, and allowed to stand for 100 min of reaction, then 60 g of chloroacetic acid, isopropyl alcohol, heated to 80°C, and reacted to obtain a preliminary modified viscose fiber; then the preliminary modified viscose fiber is added to a 25 mg / mL silk fibroin solution, and 3 g of N-hydroxysuccinimide and 2 g of 1-ethyl-3-(3-dimethylaminopropyl) carbonyldiimidazole are added, acetic acid is added to adjust the pH to 6, stirred and reacted, and after the reaction is complete, deionized water is washed and dried to obtain a modified fiber;

[0059] The preparation method of the modified non-woven fabric comprises the following steps:

[0060] 3 g of chitosan is dissolved in a 10% by mass acetic acid solution, heated to 55°C in a water bath, and fully stirred until completely dissolved to obtain a chitosan solution, then 0.2 g of N, N'-methylene bisacrylamide is added, ultrasonically dispersed, then 4 g of polyaspartic acid, 0.1 g of ammonium persulfate, and 0.08 g of tetramethyl ethylenediamine are added, stirred and reacted to obtain a hydrogel, the hydrogel is immersed in a non-woven fabric, and then dried to obtain a modified non-woven fabric.

[0061] Comparative Example 1

[0062] A method for preparing a sanitary tampon comprises the following steps:

[0063] (1) 60 g of cotton fiber is mixed with 30 g of viscose fiber, then carded, and after carding, the single-layer cotton fiber is laid out, then the single-layer cotton fiber is stacked and cut to size to obtain a cotton fiber layer;

[0064] (2) The cotton fiber layer is wrapped with a modified non-woven fabric, pressed to obtain a strip-shaped fiber layer, then a cotton thread is fixed at the center of the strip-shaped fiber layer, and the tail end of the cotton thread is exposed 15 cm outside the strip-shaped fiber layer to obtain a strip-shaped fiber layer with a cotton thread;

[0065] (3) The strip-shaped fiber layer with a cotton thread is rolled into a long cylindrical absorbent, and after being pressed and formed in a former, it is subjected to microwave heating treatment at 60°C for 5 s to obtain a tampon body of a sanitary tampon;

[0066] (4) The tampon body of the sanitary tampon is loaded into a catheter to obtain a sanitary tampon;

[0067] The preparation method of the modified non-woven fabric comprises the following steps:

[0068] 2g of chitosan was dissolved in 10% acetic acid solution, heated to 50℃ in water bath, and stirred until completely dissolved to obtain a chitosan solution, then 0.15g of N,N'-methylene bisacrylamide was added and ultrasonically dispersed, then 3g of polyaspartic acid, 0.1g of ammonium persulfate and 0.08g of tetramethyl ethylenediamine were added and stirred to react to obtain a hydrogel, the hydrogel was immersed in non-woven fabric, and then dried to obtain a modified non-woven fabric.

[0069] Comparative Example 2

[0070] A method for preparing a sanitary tampon, comprising the following steps:

[0071] (1) mixing 60g of cotton fibers with 30g of modified fibers, then carding, and after carding, laying the single-layer cotton fibers, then stacking and shaping and cutting the single-layer cotton fibers to obtain a cotton fiber layer;

[0072] (2) wrapping the cotton fiber layer with non-woven fabric, and pressing to obtain a strip-shaped fiber layer, then fixing a cotton thread at the center of the strip-shaped fiber layer, with the tail end of the cotton thread exposed 15cm outside the strip-shaped fiber layer, to obtain a strip-shaped fiber layer with a cotton thread;

[0073] (3) rolling the strip-shaped fiber layer with a cotton thread into a long cylindrical absorbent, and after pressing and forming in a former, performing microwave heating treatment at 60℃ for 5s to obtain a tampon body of a sanitary tampon;

[0074] (4) loading the tampon body of the sanitary tampon into a catheter to obtain a sanitary tampon;

[0075] The method for preparing the modified fiber comprises the following steps:

[0076] A beaker containing 30g of viscose fibers was added with 10mL of 20% sodium hydroxide solution, heated to 45℃ and stirred, and then allowed to stand for 75min, then 45g of chloroacetic acid and isopropyl alcohol were added, heated to 70℃ and reacted to obtain a preliminary modified viscose fiber; then the preliminary modified viscose fiber was added to a 15mg / mL silk fibroin solution, and 3g of N-hydroxysuccinimide and 2g of 1-ethyl-3-(3-dimethylaminopropyl) carbonyldiimidazole were added, and acetic acid was added to adjust the pH to 5.5, and then stirred to react, and after the reaction was completed, the product was washed with deionized water and dried to obtain a modified fiber.

[0077] Test method and results

[0078] Randomly selected sanitary tampons prepared in Examples 1-3 and Comparative Examples 1-2, 20 in each group, test the push-out force of any 10 after production is completed, calculate the average value of the push-out force, and test the average value of the push-out force of the other 10 after being soaked, and test the absorption capacity, and the test results are as shown in Table 1.

[0079] Table 1: Statistics of the push-out force and the absorption amount of the sanitary tampon

[0080]

[0081] As can be seen from Table 1 above, compared with Comparative Example 1-2, the sanitary tampon prepared in Example 1-3 has a larger absorption amount and a greatly reduced push-out force after being wetted.

[0082] The above only describes the preferred embodiments of the present application and does not limit the patent scope of the present application. The present application can be variously changed and altered for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the patent protection scope of the present application.

Claims

1. A method for preparing an easily removable tampon, characterized in that, Includes the following steps: S1. Mix cotton fibers with modified fibers, then comb them. After combing, lay them into a single layer of cotton fibers. Then, stack the single layer of cotton fibers, shape and cut them to obtain a cotton fiber layer. S2. Wrap the cotton fiber layer with modified nonwoven fabric, press it to obtain a strip fiber layer, then fix cotton thread to the center of the strip fiber layer, with the tail end of the cotton thread exposed 10-20cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread. S3. The strip-shaped fiber layer with cotton thread is rolled into a long cylindrical absorbent body, pressed in a molding machine and then subjected to microwave heating treatment to obtain the tampon body; S4. Insert the tampon body into the applicator to obtain an easily removable tampon; The method for preparing the modified fiber includes the following steps: Sodium hydroxide solution was added to a beaker containing viscose fiber, the mixture was heated and stirred, and allowed to stand for a period of time. Then, chloroacetic acid and isopropanol were added, and the mixture was heated to react and obtain preliminarily modified viscose fiber. The preliminarily modified viscose fiber was then added to a silk fibroin solution, along with N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide. Acetic acid was added to adjust the pH to 5-6, and the mixture was stirred to react. After the reaction was complete, the mixture was washed with deionized water and dried to obtain modified fiber. The method for preparing the modified nonwoven fabric includes the following steps: Chitosan was dissolved in acetic acid solution, heated in a water bath, and stirred thoroughly until completely dissolved to obtain a chitosan solution. Then, N,N'-methylenebisacrylamide was added and ultrasonically dispersed. Next, polyaspartic acid, ammonium persulfate, and tetramethylethylenediamine were added and stirred to react, resulting in a hydrogel. The hydrogel was then impregnated with nonwoven fabric and dried to obtain a modified nonwoven fabric.

2. The method for preparing an easily removable tampon as described in claim 1, characterized in that, The sodium hydroxide solution has a mass fraction of 18-22%; the heating temperature is 40-50℃; the static reaction time is 50-100 min; the heating reaction temperature is 60-80℃; the mass ratio of chloroacetic acid to viscose fiber is (1-2):1; and the concentration of the silk fibroin solution is 10-20 mg / mL.

3. The method for preparing an easily removable tampon as described in claim 1, characterized in that, The mass ratio of chitosan, polyaspartic acid, and N,N'-methylenebisacrylamide is (10~30):(20~40):(1~2).

4. The method for preparing an easily removable tampon as described in claim 1, characterized in that, The water bath heating temperature is 45~55℃.

5. The method for preparing an easily removable tampon as described in claim 1, characterized in that, In step S1, the mass ratio of cotton fiber to modified fiber is (5~8):(2~4).

6. The method for preparing an easily removable tampon as described in claim 1, characterized in that, In step S1, the basis weight of the cotton fiber layer is 300~850 g / m². 2 .

7. The method for preparing an easily removable tampon as described in claim 1, characterized in that, In step S4, the microwave heating temperature is 50~65℃, and the microwave heating time is 2~8s.

8. An easily removable tampon prepared by a method for preparing an easily removable tampon as described in any one of claims 1-7.

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